Find the principal values of the dielectric constant (Kii referred to the unprimed axes
below) for the mmm material illustrated
samples are identical in size with a face area of 2.5cm^(2) and a thickness of 2 mm . They are
electroded on the large parallel faces and have capacitances of 6pF,8pF and 3 pF , respectively.
Permittivity of free space \epsi _(0)=8.854E-12(F)/(m) and C=K\epsi _(0)(A)/(t).